CVE-2020-22199
📋 TL;DR
This CVE describes a SQL injection vulnerability in phpCMS 2007 that allows attackers to execute arbitrary SQL commands through the digg_mod parameter in digg_add.php. This affects all users running the vulnerable version of phpCMS 2007 SP6 build 0805, potentially leading to complete database compromise.
💻 Affected Systems
- phpCMS 2007
📦 What is this software?
Phpcms by Phpcms
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, data manipulation, privilege escalation, and potential remote code execution through database functions.
Likely Case
Database information disclosure, data manipulation, and potential authentication bypass.
If Mitigated
Limited impact with proper input validation and parameterized queries in place.
🎯 Exploit Status
SQL injection vulnerabilities are commonly weaponized. The parameter is directly accessible via HTTP request.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available - phpCMS 2007 is outdated software
Restart Required: No
Instructions:
1. Upgrade to a modern, supported CMS platform
2. If must stay on phpCMS, manually implement parameterized queries in digg_add.php
3. Validate and sanitize all user inputs, especially digg_mod parameter
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to reject malicious SQL characters in digg_mod parameter
# In digg_add.php, add before SQL execution:
$digg_mod = preg_replace('/[^a-zA-Z0-9_]/', '', $_POST['digg_mod']);
Web Application Firewall Rule
allBlock SQL injection patterns in digg_mod parameter
# Example ModSecurity rule:
SecRule ARGS:digg_mod "@detectSQLi" "id:1001,phase:2,deny,status:403"
🧯 If You Can't Patch
- Implement network segmentation to isolate phpCMS server from critical databases
- Deploy web application firewall with SQL injection detection rules
🔍 How to Verify
Check if Vulnerable:
Test digg_add.php with SQL injection payloads in digg_mod parameter (e.g., digg_mod=1' OR '1'='1)Check Version:
Check phpCMS version in admin panel or look for version files in installation directoryVerify Fix Applied:
Test with same SQL injection payloads and verify they are rejected or sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in web server logs
- Multiple requests to digg_add.php with special characters in parameters
- Database error messages containing SQL syntax
Network Indicators:
- HTTP POST requests to digg_add.php containing SQL keywords (UNION, SELECT, etc.) in parameters
- Unusual database connection patterns from web server
SIEM Query:
source="web_server.log" AND (uri="/digg_add.php" AND (param="*'*" OR param="*UNION*" OR param="*SELECT*"))